22 lines
858 B
Diff
22 lines
858 B
Diff
Description: fix denial of service via large ClientCutText message
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Origin: backport, https://github.com/newsoft/libvncserver/commit/6037a9074d52b1963c97cb28ea1096c7c14cbf28
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Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
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Index: libvncserver-0.9.9+dfsg/libvncserver/rfbserver.c
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===================================================================
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--- libvncserver-0.9.9+dfsg.orig/libvncserver/rfbserver.c 2012-05-04 10:19:00.000000000 -0400
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+++ libvncserver-0.9.9+dfsg/libvncserver/rfbserver.c 2014-09-25 11:12:36.124058413 -0400
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@@ -2457,6 +2457,11 @@
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msg.cct.length = Swap32IfLE(msg.cct.length);
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str = (char *)malloc(msg.cct.length);
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+ if (str == NULL) {
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+ rfbLogPerror("rfbProcessClientNormalMessage: not enough memory");
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+ rfbCloseClient(cl);
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+ return;
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+ }
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if ((n = rfbReadExact(cl, str, msg.cct.length)) <= 0) {
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if (n != 0)
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